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DeWalt DCCS621 Guide D'utilisation page 8

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n ) Do not operate a chain saw in a tree unless you have
been specifically trained to do so. Operation of a chain
saw in a tree without proper training could increase the risk of
personal injury.
Causes and Operator Prevention of Kickback:
Kickback may occur when the nose or tip of the guide bar
touches an object, or when the wood closes in and pinches
the saw chain in the cut.
Tip contact in some cases may cause a sudden reverse
reaction, kicking the guide bar up and back towards
the operator.
Pinching the saw chain along the top of the guide bar may
push the guide bar rapidly back towards the operator.
Either of these reactions may cause you to lose control of
the saw which could result in serious personal injury. Do not
rely exclusively upon the safety devices built into your saw.
As a chain saw user, you should take several steps to keep
your cutting jobs free from accident or injury.
Kickback is the result of tool misuse and/or incorrect
operating procedures or conditions and can be avoided by
taking proper precautions as given below:
a ) Maintain a firm grip, with thumbs and fingers
encircling the chain saw handles, with both hands on
the saw and position your body and arm to allow you to
resist kickback forces. Kickback forces can be controlled
by the operator, if proper precautions are taken. Do not
let go of the chain saw.
b ) Do not overreach and do not cut above shoulder
height. This helps prevent unintended tip contact and enables
better control of the chain saw in unexpected situations.
c ) Only use replacement bars and chains specified by
the manufacturer. Incorrect replacement bars and chains
may cause chain breakage and/or kickback.
d ) Follow the manufacturer's sharpening and
maintenance instructions for the saw chain. Decreasing
the depth gauge height can lead to increased kickback.
The Following Precautions Should Be Followed to
Minimize Kickback:
1 . Grip saw firmly. Hold the chain saw firmly with both
hands when the motor is running. Use a firm grip with
thumbs and fingers encircling the chain saw handles.
Chain saw will pull forward when cutting on the bottom edge
of the bar, and push backward when cutting along the top
edge of the bar.
2 . Do not over reach.
3 . Keep proper footing and balance at all times.
4 . Don't let the nose of the guide bar contact a log,
branch, ground or other obstruction.
5 . Don't cut above shoulder height.
6 . Use devices such as low kickback chain and reduced
kickback guide bars that reduce the risks associated
with kickback.
7 . Only use replacement bars and chains specified by
the manufacturer or the equivalent.
8 . Never let the moving chain contact any object at the
tip of the guide bar.
9 . Keep the working area free from obstructions such
as other trees, branches, rocks, fences, stumps, etc.
Eliminate or avoid any obstruction that your saw chain could
hit while you are cutting through a particular log or branch.
6
10 . Keep your saw chain sharp and properly tensioned.
A loose or dull chain can increase the chance of
kickback. Check tension at regular intervals with the motor
stopped and tool unplugged, never with the motor running.
11 . Begin and continue cutting only with the chain
moving at full speed. If the chain is moving at a slower
speed, there is a greater chance for kickback to occur.
12 . Cut one log at a time.
13 . Use extreme caution when re‑entering a previous
cut. Engage bucking spikes into wood and allow chain to
reach full speed before proceeding with cut.
14 . Do not attempt plunge cuts or bore cuts.
15 . Watch for shifting logs or other forces that could
close a cut and pinch or fall into chain.
Kickback Safety Features

WARNING: The following features are included on your
saw to help reduce the hazard of kickback; however such
features will not totally eliminate this dangerous reaction. As
a chain saw user do not rely only on safety devices. You must
follow all safety precautions, instructions, and maintenance
in this manual to help avoid kickback and other forces which
can result in serious injury.
• Reduced‑Kickback Guide Bar, designed with a small radius
tip which reduces the size of the kickback danger zone on
bar tip. A reduced ‑ kickback guide bar is one which has
been demonstrated to significantly reduce the number and
seriousness of kickbacks when tested in accordance with
safety requirements for electric chain saws.
• Low‑Kickback Chain, designed with a contoured depth
gauge and guard link which deflect kickback force and allow
wood to gradually ride into the cutter. A low‑kickback chain is
a chain which has met kickback performance requirements of
ANSI B175.1–2012.
• Do not operate chain saw while in a tree, on a ladder, on a
scaffold, or from any unstable surface.
• Hold tool by insulated gripping surfaces when performing
an operation where the cutting tool may contact hidden
wiring. Contact with a "live" wire will make exposed metal
parts of the tool "live" and shock the operator.
• Do not attempt operations beyond your capacity or
experience. Read thoroughly and understand completely all
instructions in this manual.
• Before you start chain saw, make sure saw chain is not
contacting any object.
• Do not operate a chain saw with one hand! Serious injury
to the operator, helpers, or bystanders may result from one
handed operation. A chain saw is intended for two‑handed
use only.
• Keep the handles dry, clean, and free of oil or grease.
• Do not allow dirt, debris, or sawdust to build up on the
motor or outside air vents.
• Stop the chain saw before setting it down.
• Do not cut vines and/or small under brush.
• Use extreme caution when cutting small size brush and
saplings because slender material may catch the saw chain
and be whipped toward you or pull you off balance.
Chain Saw Names and Terms
• Bucking ‑ The process of cross cutting a felled tree or log
into lengths.
• Motor Brake (if equipped) ‑ A device used to stop the saw
chain when the trigger is released.

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